{"id":"CVE-2026-90253","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: free the mesh send cancel command when it is cancelled\n\nmesh_send_cancel() queues the pending command with a NULL destroy\ncallback, so it is only freed…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: free the mesh send cancel command when it is cancelled\n\nmesh_send_cancel() queues the pending command with a NULL destroy\ncallback, so it is only freed…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3 < b609341ee56967d9a45845ff26f79336d2114b55","Linux >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 416fabca9b7237b76aa9cafcf8c497b8ac00d88c","Linux >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 88e30d036d777b00aed42bd35000de23ff40910c","Linux >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 05438d338a875a9daa08ca3f6a35b4480cf13de4","Linux >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3 < fa46d428c014e7b72a18634679815670418e67dc","Linux >= b338d91703fae6f6afd67f3f75caa3b8f36ddef3 < 3c742feda8fcabf741a17bcf668b63c8f606f9c5","Linux 6.1"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:21.607","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90253","references":[{"url":"https://git.kernel.org/stable/c/05438d338a875a9daa08ca3f6a35b4480cf13de4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3c742feda8fcabf741a17bcf668b63c8f606f9c5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/416fabca9b7237b76aa9cafcf8c497b8ac00d88c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/88e30d036d777b00aed42bd35000de23ff40910c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b609341ee56967d9a45845ff26f79336d2114b55","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fa46d428c014e7b72a18634679815670418e67dc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90253.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90253"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536696"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90253"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90253"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90253.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.843Z","epss":0.00211,"epssPercentile":0.11317,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"slug":"CVE-2026-90253","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: free the mesh send cancel command when it is cancelled\n\nmesh_send_cancel() queues the pending command with a NULL destroy\ncallback, so it is only freed if send_cancel() runs. A cancelled entry is\nleaked, as _hci_cmd_sync_cancel_entry() does not release entry->data when\nthere is no destroy callback, and hci_cmd_sync_clear() cancels every\npending entry when the controller is unregistered. Nothing else reclaims\nit either: mgmt_pending_new() does not put the command on\nhdev->mgmt_pending.\n\nThe leak also pins the socket reference taken by mgmt_pending_new(), so\nthe mgmt socket is never released.\n\nFree the command from a destroy callback.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90253.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":216318,"id":"CVE-2026-90253","ts":1791274072306,"field":"cvss","old":null,"new":"5.5"},{"seq":216317,"id":"CVE-2026-90253","ts":1791274072306,"field":"severity","old":"none","new":"medium"}]}